TW201904421A - Jet-type aerator with multi-stage start - Google Patents

Abstract

This invention provides a jet-type aerator with multi-stage start. The jet-type aerator includes an underwater oxygen-providing structure being placed on a platform, and a dynamic system coupled to the underwater oxygen-providing structure for driving the oxygen-providing structure. A multi-stage start device electrically coupled to the dynamic system for driving the dynamic system with multi-stage.

Description

 Multi-stage activated jet aerator  

This invention relates to a jet aerator, and more particularly to a multi-stage activated jet aerator.

As the number of wild aquatic products is decreasing, and the demand for aquatic products is increasing, the scale of farmed aquatic products is also growing. The cultured aquatic products are carried out in a closed breeding pond and cannot flow naturally like river water or sea water. In order to ensure the oxygen content of the water in the culture pond, an aerator is generally used to increase oxygen.

Aerators currently have a wide range of needs in the aquaculture industry. Their main function is to aerate and recycle water in the water. Oxygenation increases the amount of dissolved oxygen in the water. The circulating water or aeration is circulated to the air. Expose the poisonous gas released from the biological metabolism or death in the aquaculture pond, such as ammonia, carbon monoxide, carbon dioxide, etc., to avoid poisoning death in the culture pond. In the water with sufficient dissolved oxygen, the organic matter is completely oxidized, and the final products are CO ₂ , H ₂ O, and other non-toxic and low-toxic substances; but if the dissolved oxygen in the water is insufficient, the oxidation of the organic matter is incomplete, and organic acids and amines are produced. Harmful substances, nitrous oxide and hydrogen sulfide are produced in the absence of dissolved oxygen. Therefore, when nitrous oxide and hydrogen sulfide are high in aquaculture water environment, the first thing to do is to increase oxygen. Many farmers simply believe that the oxygenation principle of the aerator is to increase the contact area between the air and the water body, and to increase the oxygen by tapping the water surface to allow the air to enter the water body more.

However, this method can only increase the amount of dissolved oxygen on the surface of the culture pond water, and the range of circulating water flow generated by the culture pond is small. The dissolved oxygen content in the deeper waters is still low, and the dissolved oxygen in the pool water is still insufficient, and the bottom of the pool is more The low flow causes the bottom soil to be inactivated. Therefore, it is particularly important to provide an aerator that can increase the amount of dissolved oxygen in deeper waters and activate the bottom soil. An aerator that operates in this manner is called a jet-type aerator, and generally includes a floating body, a power unit disposed on the floating body, and a structural body for supplying oxygen under a surface of the water. The output end of the water surface has a hollow outer casing, and a plurality of air inlets are disposed near the outer portion of the water unit, and an air guiding tube is disposed inside the outer casing and is driven by the power unit. The air unit is coupled to the power unit and has a plurality of air guiding holes, and the other end passes through the outer sleeve and is provided with a plurality of air outlets and is pivotally connected to a propeller blade.

Jet-type aerator, the working mechanism is to take in the air by the negative pressure generated when the propeller rotates, and the shear air is diffused by the micro-bubbles, thereby oxygenating the water body. At the same time, it has the function of mixed push flow. The advantages are easy installation, low operating cost, low noise and simple operation.

A conventional jet aerator, please refer to FIG. 1 , which comprises a buoyant floating unit 101 , a power unit 102 , a subsurface oxygen supply structure body 103 and a propeller blade 104 pivoted thereto to form an underwater oxygen supply. The unit, the submerged oxygen supply structure body 103 is erected on the buoyancy unit through the support frame 105. The structure for supplying oxygen under the water surface has a hollow outer sleeve 1031, and a plurality of air inlets 1032 are disposed outside the joint with the power unit 102. An air guiding tube 1033 is disposed inside the outer sleeve and is driven by the power unit 102. The air bearing unit 102 has a plurality of air guiding holes (not shown) adjacent to the power unit 102, and the other end passes through the outer sleeve and is provided with a plurality of air jets. The port 1035 is pivotally connected to a propeller blade 106, and the propeller blade 106 and the air guiding tube 1033 are coupled to the power unit 102. The way of aerobic is that the propeller blade rotates by the motor, and the water flows to form a swirling region when rotating, and a vacuum is formed at the air outlet of the air guiding tube, and the air on the water surface is brought by the air inlet through the air guiding tube due to the pressure relationship. In the water, by the stirring process of the propeller blade, the air and water will be fully mixed, and can be driven into the appropriate depth in the water, and the air is cut by the high-speed rotating propeller blade to effectively mix the gas and the liquid to form a fine mixture. Efficient water aerator. The power unit is driven by a three-phase AC motor, equipped with a reduction gearbox, and then drives the air guide tube and the propeller blades pivoted thereto. The driving mode of this type of aerator is indirectly driven by the gearbox. The motor efficiency is not high at about 45-50%, the speed is fixed (non-speed adjustable) and several maintenance is required every year. More importantly, because the driving mode is fixed, when the aerator is started, the propeller blades driven by the three-phase AC motor will rotate quickly without warning. This way, the starting method is easy to make fish or culture near the aerator. Water creatures are damaged by the blades and even cause death.

When the existing aerator is used, it is necessary to install a cable from the power source to the aerator in the culture tank to supply electric energy to drive the water pumping unit. However, the cable is erected in the culture pond, which causes the aerator to be difficult to move in the culture pond. The water condition of the culture pond will change with the environmental change factors, such as sunlight, wind direction, biological metabolism in water or feed, so that the ammonia, carbon monoxide and carbon dioxide content in the water will be different, so the oxygen demand in the water is increased and increased. The workload of the oxygen machine will be a dynamic relationship.

Therefore, it is necessary to develop a new type of intelligent jet aerator that can optimize its performance in a more energy-efficient and flexible environment.

In order to achieve the above object, the present invention provides a multi-stage activated jet aerator comprising: a platform, such as a buoyant floating unit, which can be floated on a water surface; an underwater oxygen supply structure, disposed above The platform is, for example, a floating unit; and a direct drive power system is pivotally connected to the subsurface oxygen supply structure for driving the underwater oxygen supply structure.

In a preferred embodiment, the underwater oxygen supply structure further comprises: a hollow outer sleeve having one or more vent holes; a hollow air tube disposed in the hollow outer sleeve and pivoted to the direct drive The power system is driven by the one or more air inlets, and one end of the air duct passing through the outer sleeve has a jet port; and a propeller blade is pivotally connected to the outer edge of the air duct to pass through one end of the outer sleeve.

The above-mentioned direct drive power system includes: a motor module comprising a rotor unit having a central rotating shaft and a certain subunit, wherein the rotatable coaxial unit is mounted coaxially in the stator unit; wherein, the central rotating shaft One end is pivotally connected to the subsurface oxygen supply structure through a bearing; and a control module is used to control the driving mode of the motor.

The control module includes: an environment detecting module for monitoring and outputting environmental parameters; and a processing unit electrically coupled to the environment detecting module for receiving the environment detecting module output The environmental parameter; and a multi-stage driving unit electrically coupled to the processing module to start the motor module in multiple stages. In addition, the motor module can be activated in multiple stages based on the environmental parameters received by the processing unit.

The environmental detection module includes: a fish finder; a potentiometer for monitoring ammonia in the water; an oxygen sensor for monitoring the oxygen content in the water; and a carbon dioxide sensor for monitoring the carbon dioxide content in the water.

The above-mentioned driving unit further comprises a multi-stage starting driving device with a slow start to avoid damage to the cultured organism.

The multi-stage start-up driving device with the slow start mentioned above is a proportional controller (PI controller) or a proportional integral derivative controller (PID controller).

In a preferred embodiment, the multi-stage activated jet aerator comprises a smart energy saving module.

According to another aspect of the present invention, a multi-stage activated jet aerator is provided, further comprising a smart energy saving module. The intelligent energy-saving system includes: an environmental monitoring unit for monitoring environmental parameters; a motor controller; and an intelligent control system having a communication gateway, having wireless network communication functions, and an environmental monitoring unit and a motor controller The electrical connection, through the environmental parameters measured by the environmental monitoring unit, can be controlled by the intelligent control system with the communication gateway via the motor controller to achieve the intelligent energy saving effect. In a preferred embodiment, the environmental monitoring unit comprises: a potentiometer for monitoring ammonia in the water; an oxygen sensor for monitoring the oxygen content in the water; and a carbon dioxide sensor for monitoring the carbon dioxide content in the water.

These and other advantages are apparent from the following description of the preferred embodiments and claims.

101‧‧‧Floating unit

102‧‧‧Power unit

103‧‧‧The main body of oxygen supply under the water surface

105‧‧‧Support frame

1031‧‧‧ hollow outer casing

1032‧‧‧Air inlet

1033‧‧‧ air duct

1035‧‧·Air Jet

106‧‧‧Spiral blade

201‧‧‧Floating unit

202‧‧‧Power unit

203‧‧‧The main body of oxygen supply under the water surface

205‧‧‧Support unit

206‧‧‧Spiral blade

207‧‧‧ protective cover

2031‧‧‧ hollow outer casing

2032‧‧‧air inlet

2033‧‧‧ air duct

2034‧‧‧ Air vents

2035‧‧ ‧Hay

31‧‧‧Power unit

301‧‧‧ Cover

302‧‧‧stator unit

304‧‧‧Rotor unit

303a‧‧‧ bearing

303b‧‧‧ bearing

305‧‧‧Overwrite

306‧‧‧propeller

307‧‧‧Coupling device

3033‧‧‧ air duct

3031‧‧‧ hollow outer casing

308‧‧‧ screw holes

40‧‧‧Control Module

401‧‧‧Intelligent Control System

402‧‧‧Environmental detection unit

403‧‧‧Processing unit

404‧‧‧ drive unit

405‧‧‧Motor

600‧‧‧Smart Energy Saving System

601‧‧‧Intelligent control unit with gateway

602‧‧‧Motor controller

603‧‧‧Environmental Monitoring Unit

604‧‧‧Motor

The present invention will be more fully understood from the following detailed description of the embodiments of the invention, and In the example.

Figure 1 is a perspective view showing a prior art jet aerator.

2 is a perspective view showing a multi-stage activated jet aerator in accordance with an embodiment of the present invention.

3 is a schematic exploded view showing a pivoting water pumping unit of a power system with a multi-stage startup spray aerator according to an embodiment of the present invention.

Figure 4 is a functional block diagram showing the operation of a multi-stage activated jet aerator in accordance with one embodiment of the present invention.

Fig. 5 is a schematic view showing the slow start and multi-stage starting mode of a multi-stage activated jet aerator according to an embodiment of the present invention.

Figure 6 is a functional block diagram showing the integration of a multi-stage activated jet aerator into a smart energy saving system in accordance with one embodiment of the present invention.

The invention is described in detail herein with reference to the particular embodiments of the invention, and the description of the invention. Therefore, the present invention may be widely practiced in other different embodiments in addition to the specific embodiments and preferred embodiments of the specification. The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily understand the utility of the present invention and its advantages by the disclosure of the present disclosure. The present invention may be applied and implemented by other specific embodiments. The details of the present invention may be applied to various needs, and various modifications or changes may be made without departing from the spirit and scope of the invention.

An embodiment described in the specification refers to a particular feature, method or characteristic described in connection with this embodiment, which is included in at least some embodiments. Therefore, the implementation of the various embodiments or aspects of the various embodiments is not necessarily the same embodiment. Furthermore, the features, methods, or characteristics of the invention may be combined as appropriate in one or more embodiments.

The present invention utilizes a direct drive power system to drive an air duct inside a hollow outer casing of a structure of a submerged oxygen supply of a jet aerator, and a pivoting propeller blade thereof, without driving through a reduction gear box; The driving mode of the driving force system is multi-stage starting and its power supply and working output. The underwater aeration mode of the aerator can be controlled by an intelligent control unit to achieve energy saving and performance optimization.

In one embodiment, the direct drive power system of the aerator is a permanent magnet motor or a direct current motor that directly drives the structure of the submerged oxygen supply of the jet aerator.

As shown in FIG. 2, it shows a multi-stage start-up jet aerator of the present invention, which comprises a platform. In an embodiment, it can be a buoyant floating unit 201 and a transmission support unit 205. The structural main body 203 installed under the water surface of the floating unit 201 and the underwater propeller unit 206 pivoted thereto, the structural body 203 of the oxygen supply under the water surface is erected on the buoyancy unit through the support frame 205, under the water surface The structure of the oxygen supply unit has a hollow outer sleeve 2031, and a plurality of air inlets 2032 are disposed near the outer portion of the oxygen supply unit 202. An air guide tube 2033 is disposed inside the outer sleeve and is driven by the power unit 202. A plurality of air guiding holes 2034 are coupled to the power unit 202, and the other end passes through the outer sleeve and is provided with a plurality of air blowing ports 2035 and is pivotally connected to a propeller blade 206. The propeller blades 206 and the air guiding tube 2033 are coupled to the power unit 202. A protective cover 207 is externally connected to the end of the structural body 203 for oxygen supply under the water surface to protect the propeller blade and prevent foreign matter from entering.

The power system for driving the subsurface oxygen supply unit is a permanent magnet motor or a direct current motor. The pivoting manner is to install the air pipe 2032 of the subsurface oxygen supply unit inside the structural body 203 through the rotating shaft of the motor, because the permanent magnet has a permanent magnet. And micro-control IC, permanent magnet motor or DC motor with high efficiency, low vibration and low noise, it has direct drive, adjustable speed, adjustable speed range between 0-450rpm, no gearbox, output power It can reach 500-750W and the efficiency can reach 90%. Compared with the conventional AC induction motor-driven surge aerator, its annual power consumption is about half, and the cost of replacing or maintaining the gearbox parts can be saved, so that the economic benefit can be greatly increased.

The multi-stage starting jet aerator of the motor direct drive of the present invention, the permanent magnet motor or the direct current motor is directly connected with the air guiding tube 2032 of the subsurface oxygen supply unit of the jet aerator in the internal axis of the rotating shaft of the rotor. And mounted in the interior of the structural body 203. In the preferred embodiment of the present invention, please refer to FIG. 3. The direct driving force system composed of a permanent magnet motor or a DC motor mainly includes a motor stator, and the shape thereof is cylindrical and A plurality of coil windings are arranged along the radial direction thereof, and the motor stator is mounted in a casing; a rotor is cylindrical and rotatably coaxially mounted in the motor stator, and the rotor is provided with a plurality of permanent magnets and The motor stator is magnetically coupled.

3 is a schematic diagram showing the explosion of the underwater oxygen supply unit of the jet power aerator according to the motor power system, wherein the power unit 31 includes a cover 301, a certain subunit 302, a rotor unit 304, bearings 303a and 303b, and a cover. 305. The underwater oxygen supply unit comprises a hollow outer casing, a hollow air pipe, and a propeller. Referring to FIG. 3, a certain subunit is fixed in a casing 301, and a rotor unit 304 is mounted on the side of the central rotating shaft 304a through a bearing 303a inside the stator 302 and pivoted to the casing 301; the rotor unit 304 is a stator unit 302. The cover is disposed between the cover 301 and the cover 305 through the central rotating shaft 304a and the two side bearings 303a and 304a, and the other side of the central rotating shaft 304a passes through the other bearing 303b and passes through a central opening of the cover 305. The oxygen machine is coupled and the rotor unit 304 and the air supply tube 3033 of the underwater oxygen supply unit are fixed by a coupling device 307. The rotor unit 304 of the motor is integrated with the air guiding tube 3033 and the propeller 306 blade mounted thereon, so that the motor can rotate to directly drive the blade; the hollow outer sleeve 3031 passes through the plurality of screw holes 308 and the power unit covers 305. The rotor unit 304, the outer sleeve 3031 and the air guiding tube 3033 are coaxially coupled, and the air guiding tube 3033 is rotatably coaxially disposed in the outer sleeve 3031.

In the actual operation of the direct-drive jet aerator, please refer to Figure 2 and Figure 3. The aerator is placed on the floating unit to float on the surface of the water. The cylindrical handle of the aerator and the support frame 205 The shaped support holes are pivoted such that the aerator can be rotated up and down to adjust the angle of the oxygen supply structure relative to the water surface. When the jet aerator is in operation, the motor rotates the propeller coupled to the hollow air duct. The partial pressure is created at the end of the shaft by pushing the water at a high speed with the nearby propeller blades. The atmospheric air above the waterline passes through the air inlet and enters the hollow shaft. The air is sucked through the hollow shaft, and then the water flow generated by the high speed rotation of the propeller blade is broken into microbubbles and mixed with water. Due to the high turbulence effect, the microbubble aeration effect is obvious and the oxygenation efficiency is high.

4 is a functional block diagram showing the operation principle of the multi-stage activated jet aerator according to the present invention, wherein the multi-stage starting motor device control system is used to drive the jet aerator 407, which includes a control module 40. An environment detecting unit 402, and a brushless DC motor or a permanent magnet motor 405. The control module 40 includes a processing unit 403 and a driving unit 404. The processing unit 403 can be a microprocessor (MCU), and the driving unit 404 can be a motor driving circuit with a slow start or multi-stage startup, or Drive module integrated with proportional integral (PI) and proportional integral derivative (PID) controllers. The control module 40 is electrically connected to the motor 405, and the environment detecting unit 402 (including various underwater obstacle detectors, fish position detectors, various gas sensors, and water potentiometers, etc.) is electrically connected to the control. The module 40 determines the driving mode of the motor through various environmental parameters, and then adjusts the starting mode of the jet aerator. In one embodiment, the fish position detector can be a wireless sonar fish finder. For example, when the fish position detector in the environment detecting unit 402 detects that there is a fish group near the aerator, or detects an obstacle in the water, the control module 40 will start the slow start mode to prevent the fish from being injured. Or death.

The control module 40 can be electrically coupled to the control module through a pulse width modulation unit 406 for pulse width modulation to provide efficient and highly stable motor control. In addition, the control module 40 can also be integrated with an intelligent control system 401 having a communication gateway, which is described in detail in the detailed embodiment.

FIG. 5 shows an embodiment of a multi-stage starter motor. After the motor is started, the control module generates a multi-stage start signal including a slow start signal, and drives and controls the speed of the motor according to the multi-stage start signal. In addition, the multi-stage start signal can also be generated by an external device, such as a multi-stage start-up circuit, and then control the rotational speed of the motor via the control module. In one embodiment, the multi-stage start signal includes a slow start section A and a target drive section B, and the control module slowly increases the motor speed to the target drive section B according to the slow start section A, and then another slow start section. C reaches a target drive segment D (or a target drive segment E is reached by another deceleration segment C'). The control module can also adjust the slope of the slow start section A, and the speed of the motor can be controlled by adjusting the slope to increase the speed to the target drive section B. In one embodiment, the technique for adjusting the slope of the slow start segment A (C or C') may be a feedback control technique such as proportional integral (PI) or proportional integral derivative (PID).

Because the water condition of the culture pond will change the ammonia, carbon monoxide and carbon dioxide content in the water according to environmental factors, such as sunlight, wind direction, biological metabolism in water or feed, the amount of oxygen demand in the water increases and increases. The workload of the oxygen machine will change. Referring to FIG. 6, the multi-stage starter motor-driven jet aerator can be integrated into a smart energy-saving system 600. In an embodiment, the intelligent control system includes an intelligent control with a gateway. The unit 601, a motor controller 602, and an environment monitoring unit 603, the intelligent control unit 601 is electrically connected to the motor controller 602 and the environment monitoring unit 603. The intelligent control unit 601 has a network communication interface, which can communicate with the outside world via a network through a communication protocol such as WiFi/2G/4G/Lora, and can monitor the motor controller through wireless network communication. When the water condition of the culture pond changes with the environment, the ammonia, carbon monoxide and carbon dioxide content in the water can be measured by the sensor of various gases in the environmental monitoring unit, such as carbon monoxide, carbon dioxide content, or by the potentiometer to know the ammonia gas. The content, the amount of nutrients required for the culture pond can be known from the information. Therefore, the detectors for monitoring other gases of ammonia (CO ₂ , O ₂ ) through the potentiometer in the environmental monitoring unit 603 can pass through the motor through the intelligent control unit 601. The controller 602 controls the rotational speed of the motor 604 to achieve the effect of intelligent energy saving.

According to the above, the present invention has the following advantages: First, a jet aerator that provides a direct drive power system, does not require a reduction box, the motor speed is adjustable, the efficiency can reach 90%; Second, has a multi-stage starter motor drive mode, It can provide a slow start to prevent the propeller blade of the jet aerator from injuring the fish and aquarium near the aerator; 3. It can be combined with the intelligent control system to control the motor speed to achieve the effect of intelligent energy saving.

The above description is a preferred embodiment of the invention. Those skilled in the art should be able to understand the invention and not to limit the scope of the patent claims claimed herein. The scope of patent protection is subject to the scope of the patent application and its equivalent fields. Any modification or refinement made by those skilled in the art without departing from the spirit or scope of the present invention is equivalent to the equivalent change or design made in the spirit of the present disclosure, and should be included in the following patent application scope. Inside.

Claims (10)

 A multi-stage activated jet aerator comprises: an underwater oxygen supply structure disposed on a platform; and a power system pivotally connected to the subsurface oxygen supply structure for driving the underwater oxygen supply Structure; a multi-stage starting device electrically coupled to the power system to start the power system in multiple stages.    The multi-stage activated jet aerator according to claim 1, wherein the underwater oxygen supply structure further comprises: a hollow outer casing having one or more vent holes; a hollow air pipe disposed at the a hollow outer sleeve pivotally connected to and driven by the directly driven power system, having one or more air inlets, and having an air outlet at one end of the air duct passing through the outer sleeve; and a propeller blade pivot The air guiding tube is connected to the outer edge of one end of the outer sleeve.    The multi-stage activated jet aerator according to claim 1, wherein the power system comprises: a motor module comprising a rotor unit having a central rotating shaft and a certain subunit, the rotor unit being rotatable The coaxial unit is disposed in the stator unit; wherein one end of the central rotating shaft is pivotally connected to the subsurface oxygen supply structure through a bearing; and a control module is configured to control the driving mode of the motor.    The multi-stage activated jet aerator according to claim 3, wherein the control module comprises: an environment detecting module for monitoring and outputting environmental parameters; and a processing unit, electrical The environment detection module is coupled to the environment detection module for receiving the environmental parameter output by the environment detection module.    The multi-stage activated jet aerator according to claim 4, wherein the environmental detection module comprises: a fish finder; a potentiometer for monitoring ammonia in the water; and an oxygen sensor for monitoring Oxygen content in water; and a carbon dioxide sensor to monitor the carbon dioxide content of the water.    The multi-stage activated jet aerator according to claim 1, wherein the platform comprises a buoyant floating unit that can be floated on a water surface.    The multi-stage starting jet aerator according to claim 1, wherein the multi-stage starting device is a proportional controller (PI controller) or a proportional integral derivative controller (PID controller).    For example, the multi-stage activated jet aerator according to the first item is requested, and further comprises a smart energy saving module.    The multi-stage activated jet aerator according to claim 8, wherein the intelligent energy saving module comprises: an environmental monitoring unit that monitors and outputs environmental parameters; a motor controller; and a communication gateway The intelligent control system is electrically connected to the environmental monitoring unit and the motor controller to transmit environmental parameters measured by the environmental monitoring unit.    The multi-stage activated jet aerator according to claim 9, wherein the environmental monitoring unit comprises: a fish finder; a potentiometer for monitoring ammonia in the water; and an oxygen sensor for monitoring oxygen in the water. Content; and a carbon dioxide sensor to monitor the carbon dioxide content of the water.